My neighbor bought an extended cab 2500, in spite of me guaranteeing it wouldn't fit in his garage... He thought the extended cab would be nice for his kids on long trips... His wife is barely 5 feet with heels..... Dude... your kids aren't going to need the leg room trust me.
I hate that fucking cover.... His wife is a sweetheart, So I get suckered into helping her take it off, and putting the POS back on once a month or so... when she drives it.
If you buy a $80k+ vehicle, and put a cover on it... Your priorities are fucked IMO, You were looking for a bigger house, with a bigger garage, but got side tracked at a car dealership.